:root {
      --primary: #FF5500;
      --primary-hover: #E04B00;
      --primary-light: #FFF0E6;
      --primary-glow: rgba(255, 85, 0, 0.25);
      --secondary: #FF8800;
      --dark: #1F2429;
      --gray-deep: #4B5563;
      --gray-sub: #6B7280;
      --gray-light: #F9FAFB;
      --gray-border: #E5E7EB;
      --white: #FFFFFF;
      --shadow-sm: 0 2px 4px rgba(0,0,0,0.04);
      --shadow-md: 0 6px 16px rgba(255,85,0,0.08);
      --shadow-lg: 0 12px 28px rgba(0,0,0,0.08);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: #FAFAFA;
      color: var(--dark);
      line-height: 1.6;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    ul, ol {
      list-style: none;
    }
    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }
    .section-title-wrap {
      text-align: center;
      margin-bottom: 50px;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--gray-sub);
      max-width: 720px;
      margin: 0 auto;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--gray-border);
      transition: var(--transition);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      max-width: 220px;
    }
    .ai-page-logo {
      display: block;
      height: 38px;
      width: auto;
      object-fit: contain;
    }
    .nav-bar {
      display: flex;
      align-items: center;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }
    .nav-links li a {
      padding: 8px 14px;
      font-size: 14px;
      font-weight: 500;
      color: var(--dark);
      border-radius: 6px;
      display: inline-block;
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background: var(--primary-light);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      background: linear-gradient(135deg, #FF6600 0%, #FF3E00 100%);
      color: var(--white) !important;
      font-size: 14px;
      font-weight: 600;
      border-radius: 8px;
      box-shadow: 0 4px 14px var(--primary-glow);
      border: 1px solid transparent;
      cursor: pointer;
      white-space: nowrap;
    }
    .btn-main:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(255, 62, 0, 0.35);
    }
    .btn-sub {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      background: var(--white);
      color: var(--primary) !important;
      border: 1px solid #FFCCB3;
      font-size: 14px;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
    }
    .btn-sub:hover {
      background: var(--primary-light);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--dark);
      cursor: pointer;
      padding: 6px;
    }

    /* 首屏 Hero (无图，纯CSS与科技氛围) */
    .hero-section {
      padding: 90px 0 70px;
      background: radial-gradient(circle at 50% 20%, #FFF5ED 0%, #FAFAFA 70%);
      position: relative;
      border-bottom: 1px solid var(--gray-border);
    }
    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #FFFFFF;
      border: 1px solid #FFD6C2;
      border-radius: 30px;
      color: var(--primary);
      font-size: 13px;
      font-weight: 700;
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 40px;
      font-weight: 900;
      color: #111827;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }
    .hero-title span {
      background: linear-gradient(135deg, #FF6600, #E62E00);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 18px;
      color: var(--gray-deep);
      line-height: 1.6;
      margin-bottom: 36px;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }
    .btn-hero-official {
      padding: 14px 34px;
      font-size: 16px;
      font-weight: 700;
      border-radius: 10px;
      background: linear-gradient(135deg, #FF5500 0%, #FF2200 100%);
      color: var(--white) !important;
      box-shadow: 0 8px 24px var(--primary-glow);
    }
    .btn-hero-official:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 28px rgba(255, 34, 0, 0.4);
    }
    .hero-kpis {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 10px;
    }
    .kpi-card {
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      padding: 20px 16px;
      border-radius: 12px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      text-align: center;
    }
    .kpi-card:hover {
      transform: translateY(-3px);
      border-color: #FFB380;
      box-shadow: var(--shadow-md);
    }
    .kpi-val {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .kpi-name {
      font-size: 13px;
      color: var(--gray-sub);
    }

    /* 品牌模型支持滚动条 */
    .model-strip {
      background: #FFFFFF;
      border-bottom: 1px solid var(--gray-border);
      padding: 24px 0;
      overflow: hidden;
    }
    .model-strip-label {
      text-align: center;
      font-size: 13px;
      color: var(--gray-sub);
      margin-bottom: 14px;
      font-weight: 600;
    }
    .tag-cloud-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }
    .model-chip {
      background: #F3F4F6;
      border: 1px solid #E5E7EB;
      padding: 5px 12px;
      border-radius: 6px;
      font-size: 12px;
      color: #374151;
      font-weight: 600;
      transition: var(--transition);
    }
    .model-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--primary-light);
    }

    /* 关于我们与平台介绍 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .about-text h3 {
      font-size: 24px;
      font-weight: 700;
      margin-bottom: 18px;
      color: var(--dark);
    }
    .about-text p {
      font-size: 15px;
      color: var(--gray-deep);
      line-height: 1.8;
      margin-bottom: 16px;
    }
    .feature-points {
      margin-top: 20px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }
    .point-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: var(--dark);
      font-weight: 600;
    }
    .point-icon {
      width: 18px;
      height: 18px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
    }
    .about-media-box {
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      border-radius: 14px;
      padding: 24px;
      box-shadow: var(--shadow-md);
    }
    .about-media-box .ai-page-image {
      border-radius: 8px;
      display: block;
      margin-bottom: 16px;
      width: 100%;
    }
    .about-media-box .ai-page-image:last-child {
      margin-bottom: 0;
    }

    /* 服务能力卡片与场景网格 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: var(--white);
      border: 1px solid var(--gray-border);
      border-radius: 12px;
      padding: 28px 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-card:hover {
      transform: translateY(-4px);
      border-color: #FF9966;
      box-shadow: var(--shadow-md);
    }
    .card-top {
      margin-bottom: 16px;
    }
    .card-icon {
      width: 44px;
      height: 44px;
      background: var(--primary-light);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .service-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--dark);
    }
    .service-card p {
      font-size: 14px;
      color: var(--gray-deep);
      line-height: 1.6;
    }
    .card-btn-more {
      align-self: flex-start;
      margin-top: 16px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 一站式制作场景矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .matrix-box {
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      border-radius: 10px;
      padding: 20px;
      transition: var(--transition);
    }
    .matrix-box:hover {
      border-color: var(--primary);
      background: #FFFDFC;
      box-shadow: var(--shadow-sm);
    }
    .matrix-box h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 8px;
    }
    .matrix-box p {
      font-size: 13px;
      color: var(--gray-sub);
      line-height: 1.5;
    }

    /* 标准制作流程 */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-item {
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      border-radius: 12px;
      padding: 24px 20px;
      position: relative;
    }
    .step-num {
      font-size: 28px;
      font-weight: 900;
      color: #FFB380;
      margin-bottom: 10px;
    }
    .step-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 13px;
      color: var(--gray-sub);
      line-height: 1.5;
    }

    /* 案例中心 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-card {
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #FF9966;
    }
    .case-img-box {
      width: 100%;
      height: 200px;
      background: #F3F4F6;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-info {
      padding: 20px;
    }
    .case-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 8px;
    }
    .case-desc {
      font-size: 13px;
      color: var(--gray-sub);
      line-height: 1.5;
    }

    /* 对比评测表格与评分体系 */
    .eval-score-banner {
      background: linear-gradient(135deg, #FFF0E6 0%, #FFFFFF 100%);
      border: 1px solid #FFD1BA;
      border-radius: 12px;
      padding: 28px;
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }
    .eval-score-left {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .eval-rating {
      font-size: 44px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }
    .eval-stars {
      color: #FF8800;
      font-size: 20px;
      margin-top: 4px;
    }
    .eval-sub {
      font-size: 14px;
      color: var(--gray-sub);
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      border-radius: 12px;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }
    .compare-table th, 
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--gray-border);
      font-size: 14px;
    }
    .compare-table th {
      background: #F9FAFB;
      font-weight: 700;
      color: var(--dark);
    }
    .compare-table .highlight-col {
      background: #FFF9F5;
      font-weight: 700;
      color: var(--primary);
    }

    /* 客户评论卡片 (6条) */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-text {
      font-size: 14px;
      color: var(--gray-deep);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px dashed var(--gray-border);
      padding-top: 14px;
    }
    .user-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #FFD1BA;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
    }
    .user-info h5 {
      font-size: 14px;
      font-weight: 700;
      color: var(--dark);
    }
    .user-info span {
      font-size: 12px;
      color: var(--gray-sub);
    }

    /* FAQ 折叠面板 (不少于10条) */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      border-radius: 10px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-question {
      padding: 18px 20px;
      font-size: 15px;
      font-weight: 700;
      color: var(--dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-icon {
      font-size: 18px;
      color: var(--gray-sub);
      transition: var(--transition);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #FAFAFA;
      border-top: 1px solid transparent;
    }
    .faq-answer-inner {
      padding: 16px 20px;
      font-size: 14px;
      color: var(--gray-deep);
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      border-top-color: var(--gray-border);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }

    /* 表单与需求匹配 */
    .form-section-inner {
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      border-radius: 16px;
      padding: 40px;
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: start;
    }
    .contact-side-info h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 14px;
    }
    .contact-side-info p {
      font-size: 14px;
      color: var(--gray-deep);
      margin-bottom: 24px;
      line-height: 1.6;
    }
    .direct-contacts {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .contact-row {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: var(--dark);
    }
    .contact-badge {
      background: var(--primary-light);
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
      font-size: 12px;
    }
    .app-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-label {
      font-size: 13px;
      font-weight: 600;
      color: var(--dark);
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--gray-border);
      border-radius: 8px;
      font-size: 14px;
      background: #FFFFFF;
      color: var(--dark);
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px var(--primary-light);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }

    /* 文章与百科推荐 */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .article-card {
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      border-radius: 10px;
      padding: 20px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .article-card:hover {
      border-color: var(--primary);
      transform: translateY(-2px);
    }
    .article-card h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 8px;
      line-height: 1.5;
    }
    .article-link {
      font-size: 13px;
      color: var(--primary);
      font-weight: 600;
      margin-top: 10px;
    }

    /* 微信与客服二维码展示 */
    .qr-banner {
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      border-radius: 12px;
      padding: 24px;
      display: flex;
      align-items: center;
      justify-content: space-around;
      margin-top: 40px;
      flex-wrap: wrap;
      gap: 20px;
    }
    .qr-block {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .qr-block img {
      width: 88px;
      height: 88px;
      border-radius: 8px;
      border: 1px solid var(--gray-border);
      object-fit: cover;
    }
    .qr-info h5 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 4px;
    }
    .qr-info p {
      font-size: 13px;
      color: var(--gray-sub);
    }

    /* 友情链接 */
    .links-section {
      background: #F3F4F6;
      padding: 30px 0;
      border-top: 1px solid var(--gray-border);
      border-bottom: 1px solid var(--gray-border);
    }
    .links-title {
      font-size: 13px;
      font-weight: 700;
      color: var(--gray-deep);
      margin-bottom: 12px;
    }
    .links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .links-wrap a {
      font-size: 13px;
      color: var(--gray-sub);
    }
    .links-wrap a:hover {
      color: var(--primary);
    }

    /* 页脚 */
    .site-footer {
      background: #181B1F;
      color: #9CA3AF;
      padding: 60px 0 30px;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-links-list li {
      margin-bottom: 10px;
    }
    .footer-links-list li a {
      color: #9CA3AF;
    }
    .footer-links-list li a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      border-top: 1px solid #2D333B;
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: #6B7280;
    }

    /* 悬浮工具条 */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 40px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }
    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      color: var(--dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      box-shadow: var(--shadow-md);
      cursor: pointer;
      transition: var(--transition);
    }
    .float-btn:hover {
      background: var(--primary);
      color: #FFFFFF;
      border-color: var(--primary);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 32px;
      }
      .about-grid, 
      .form-section-inner, 
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .service-grid, 
      .case-grid, 
      .review-grid, 
      .article-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .matrix-grid, 
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-kpis {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-bar {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        border-bottom: 1px solid var(--gray-border);
        padding: 16px 20px;
        box-shadow: var(--shadow-lg);
      }
      .nav-bar.active {
        display: block;
      }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
      }
      .header-actions {
        display: none;
      }
      .service-grid, 
      .case-grid, 
      .review-grid, 
      .article-grid, 
      .matrix-grid, 
      .flow-steps, 
      .hero-kpis {
        grid-template-columns: 1fr;
      }
      .section-wrap {
        padding: 50px 0;
      }
      .hero-title {
        font-size: 26px;
      }
    }